Android SearchView

I have a problem with a SearchView.

There is a shift of the writing top and this is a screen for this SearchView:

enter image description here

and this is my code:

<SearchView
android:id="@+id/search"
android:layout_width="150dp"
android:layout_height="30dp"
android:layout_gravity="center_vertical"
android:background="@drawable/recherche"
android:ems="9"
android:gravity="bottom"
android:iconifiedByDefault="false"
android:textColorHint="#2b3990" />

Solution

<SearchView
    android:id="@+id/search"
    android:layout_width="150dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical"

    android:ems="9"
    android:gravity="bottom"
    android:iconifiedByDefault="false"
    android:textColorHint="#2b3990" />